4285F Просмотр технического описания (PDF) - Intersil

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производитель

4285F

CPU Supervisor with 128K EEPROM

Intersil 

X4283, X4285

RESET Output Timing

Symbol

tWDO

tRST

Parameter

Watchdog Time Out Period,

WD1 = 1, WD0 = 1 (factory setting)

WD1 = 1, WD0 = 0

WD1 = 0, WD0 = 1

WD1 = 0, WD0 = 0

Reset Time Out

VTRIP Programming Timing Diagram (WEL = 1)

VCC

(VTRIP)

VTRIP

VP

WP

tVPS

SCL

Min.

100

450

1

100

Typ.

OFF

250

650

1.5

250

tTSU

tVPH

SDA

A0h

00h

01h or 03h

00h

Max.

400

850

2

400

tTHD

tVPO

tRP

Unit

ms

ms

sec

ms

VTRIP Programming Parameters

Parameter

Description

tVPS

VTRIP Program Enable Voltage Setup time

tVPH

VTRIP Program Enable Voltage Hold time

tTSU

VTRIP Setup time

tTHD

VTRIP Hold (stable) time

tWC

VTRIP Write Cycle Time

tVPO

VTRIP Program Enable Voltage Off time (Between successive adjustments)

tRP

VTRIP Program Recovery Period (Between successive adjustments)

VP

Programming Voltage

VTRAN

VTRIP Programmed Voltage Range

Vtv

VTRIP Program variation after programming (0-75°C). (Programmed at 25°C.)

VTRIP programming parameters are periodically sampled and are not 100% tested.

Min.

1

1

1

10

0

10

15

2.55

-25

Max.

10

18

4.75

+25

Unit

µs

µs

µs

ms

ms

µs

ms

V

V

mV

20

FN8121.1

May 23, 2006

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